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dsif DSIF =deep space instrumenta...

dsir

Numeral results of dsif at radial crack tips of ellipse and square cavities are provided . then the influences of different shape cavities upon the dsif at the crack of their edges are discussed . 5 . scattering of sh - wave by a radial interface crack at the edge of arbitrary - shape - cavity is studied 給出了橢圓孔和方孔孔邊徑向界面裂紋尖端動應力強度因子的數值結果,討論了在不同形狀孔、不同入射波數、不同入射角和不同材料常數組合情況下孔邊徑向界面裂紋尖端動應力強度因子變化的規律。

The method of crack - division is used to make radial cracks at the edge of cavity . a series of integral equations for determining the dsif at tips of anti - plane crack are set up in terms of the green ' s function 按“契合”的方式和采用裂紋切割技術構造出孔邊徑向界面裂紋對sh波散射的模型,利用green函數建立直接求解m型裂紋尖端動應力強度因子的定解積分方程組。

Scattering of sh - wave by a radial collinear crack at the edge of arbitrary - shape - cavity in isotropy media is studied . the solution of dsif at crack tips is obtained 研究了各向同性介質中任意形孔邊徑向裂紋對sh波的散射,求解了裂紋尖端的動應力強度因子。